RE: [Paddlewise] Longitude and astronomy

From: PeterO <rebyl_kayak_at_energysustained.com>
Date: Fri, 30 Jul 2010 18:49:29 +1000
PS

Sorry I should have included the Lunar distance method as capitalised below

............It looks as if Cook might have used a process such as
recalibrating his clock for local time every day against sunrise, sunset and
noon. The clock would then only have to remain within spec for 24 hours AND
MEASURE LOCAL TIME and not for months or years to maintain synchronism with
Greenwich. Presumably there were enough stars visible in both the southern
and northern hemispheres so that Cook in Australia could use the tables
developed at Greenwich TO TRY OUT THE LUNAR METHOD...........

All the best, PeterO
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Received on Fri Jul 30 2010 - 01:49:37 PDT

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